60V-Rated Synchronous Buck Converters from Diodes Incorporated Bring Enhanced Efficiency to Automotive PoL Applications
Diodes Incorporated has launched two new synchronous buck converters, the AP66200Q and AP66300Q, specifically designed for automotive point-of-load applications. These converters operate within an input voltage range of 3.8V to 60V, addressing various automotive systems including 12V, 24V, and 48V. They feature a low quiescent current of 40μA and can be configured for efficient operation in pulse frequency modulation or pulse width modulation modes. Both parts are AEC-Q100 Grade 1 qualified and priced at $1.30 and $1.50 in 10,000 unit quantities.
- Launch of AP66200Q and AP66300Q enhances product portfolio for automotive applications.
- Low quiescent current of 40μA meets <100µA standby requirements for automotive use.
- Both converters meet AEC-Q100 Grade 1 qualification, ensuring reliability in automotive environments.
- Programmable soft-start and adjustable switching frequency capabilities offer design flexibility.
- None.
Thanks to their low quiescent current (IQ) of 40μA, the AP66200Q and AP66300Q meet the <100µA standby requirements associated with many automotive applications. They are easily configured to operate in either pulse frequency modulation (PFM) or pulse width modulation (PWM) modes. When in PFM mode, improved efficiency will be achieved at light loads. Operation in PWM mode will result in low ripple across all loads.
Both devices have adjustable switching frequency capabilities (up to 2.5MHz) and can be synchronized to avoid beat frequency issues. Engineers have the flexibility to choose between high-efficiency operation or a smaller system design. Their low on-state resistance (RDS(ON)) values and enhanced efficiency modes enable a substantial reduction in internal power dissipation. The soft-start pin is programmable to reduce inrush current and can be employed for tracking multiple output voltages.
The AP66200Q and AP66300Q are AEC-Q100 Grade 1 qualified, manufactured in IATF 16949 certified facilities, and support PPAP documentation. They are each supplied in compact 16-pin U-QFN4040-16/SWP (Type UXB) packages and are available at
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